National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by 2-Digit Standard Industrial Classification (SIC)*

Agent Name MORPHOLINE, 4-(2-NITROBUTYL)-
CAS # 2224-44-4
RTECS #
Agent Code M3297

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
25 FURNITURE AND FIXTURES 1,281  
33 PRIMARY METAL INDUSTRIES 831  
34 FABRICATED METAL PRODUCTS 12,933 2,669
35 MACHINERY, EXCEPT ELECTRICAL 6,024 16
36 ELECTRIC AND ELECTRONIC EQUIPMENT 1,576 47
37 TRANSPORTATION EQUIPMENT 5,470 1,576
50 WHOLESALE TRADE - DURABLE GOODS 328  
TOTAL 28,444 4,308

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.

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